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Design and Testing of LCC-Compensated Dynamic Wireless Electric Vehicle Charging System

Abdulhameed, Mustafa Faeq
A Master of Science thesis in Electrical Engineering by Mustafa Faeq Abdulhameed entitled, “Design and Testing of LCC-Compensated Dynamic Wireless Electric Vehicle Charging System”, submitted in April 2022. Thesis advisor is Dr. Ahmed Osman and thesis co-advisor is Dr. Mohamed Hassan. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).
Electric vehicles (EV) are witnessing a growth in the vehicle’s markets. One main reason to this growth is that they serve as a new form of clean transportation. This increasing number needs a sufficient number of charging stations. Dynamic Wireless Power Transfer (DWPT) is offering a suitable solution to mitigate this problem by charging EVs wirelessly during their motion, which can compensate for energy consumption and reduce the size of the EV battery pack. Nevertheless, DWPT has different challenges such as the continuous fluctuation of the coupling coefficients, the output power pulsation in addition to the variation of the received energy with EV travelling velocities. To overcome the aforementioned problems, this thesis develops an LCC-compensated, multi-secondary coil structure with primary/secondary current and power control strategies to control and maximize the output power with ± 200 mm Lateral Misalignment (LTMA) while achieving Zero Phase Angle (ZPA) at the single resonance frequency of the system. A DD-DDQ inductive link is adopted in this thesis due to its significant performance in DWPT, offering high misalignment tolerance in addition to overcoming the problem of the power null point. Using the proposed compensation and tuning methods, the power transfer efficiency of the DD-DDQ system at higher misalignment is improved. This is further verified by implementing a down-scaled experimental prototype with manual inverter control to replicate the simulated control strategy that improves the misalignment tolerance, particularly at ±200 mm lateral misalignment.
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